[u/mrichter/AliRoot.git] / HBTAN / AliHBTReaderITSv1.cxx


#include "AliHBTReaderITSv1.h"
#include "AliHBTEvent.h"
#include "AliHBTRun.h"
#include "AliHBTParticle.h"
#include "AliHBTParticleCut.h"

#include <Riostream.h>

#include <TROOT.h>
#include <TFile.h>
#include <TTree.h>
#include <TBranch.h>
#include <TObjArray.h>
#include <TParticle.h>
#include <TString.h>
#include <TObjString.h>

#include <AliRun.h>
#include <AliMagF.h>
#include <AliKalmanTrack.h>
#include <AliITSIOTrack.h>
#include "AliMC.h"

ClassImp(AliHBTReaderITSv1)
/********************************************************************/

AliHBTReaderITSv1::
AliHBTReaderITSv1(const Char_t* tracksfilename,const Char_t* galicefilename):
                 fITSTracksFileName(tracksfilename),fGAliceFileName(galicefilename)
 {
     fParticles = new AliHBTRun();
     fTracks    = new AliHBTRun();
     fIsRead = kFALSE;
 }
/********************************************************************/

AliHBTReaderITSv1::
AliHBTReaderITSv1(TObjArray* dirs, const Char_t* tracksfilename,const Char_t* galicefilename):
                 AliHBTReader(dirs),
                 fITSTracksFileName(tracksfilename),fGAliceFileName(galicefilename)
 {
   fParticles = new AliHBTRun();
   fTracks    = new AliHBTRun();
   fIsRead    = kFALSE;
 }
/********************************************************************/

AliHBTReaderITSv1::~AliHBTReaderITSv1()
{
   delete fParticles;
   delete fTracks;
}
/********************************************************************/

AliHBTEvent* AliHBTReaderITSv1::GetParticleEvent(Int_t n)
 {
 //returns Nth event with simulated particles
   if (!fIsRead) 
    if(Read(fParticles,fTracks))
     {
       Error("GetParticleEvent","Error in reading");
       return 0x0;
     }

   return fParticles->GetEvent(n);
 }
/********************************************************************/

AliHBTEvent* AliHBTReaderITSv1::GetTrackEvent(Int_t n)
 {
 //returns Nth event with reconstructed tracks
   if (!fIsRead) 
    if(Read(fParticles,fTracks))
     {
       Error("GetTrackEvent","Error in reading");
       return 0x0;
     }
   return fTracks->GetEvent(n);
 }
/********************************************************************/

Int_t AliHBTReaderITSv1::GetNumberOfPartEvents()
 {
 //returns number of events of particles
   if (!fIsRead)
    if(Read(fParticles,fTracks))
     {
       Error("GetNumberOfPartEvents","Error in reading");
       return 0;
     }
   return fParticles->GetNumberOfEvents();
 }

/********************************************************************/
Int_t AliHBTReaderITSv1::GetNumberOfTrackEvents()
 {
 //returns number of events of tracks
  if (!fIsRead) 
    if(Read(fParticles,fTracks))
     {
       Error("GetNumberOfTrackEvents","Error in reading");
       return 0;
     }
  return fTracks->GetNumberOfEvents();
 }
/********************************************************************/

Int_t AliHBTReaderITSv1::Read(AliHBTRun* particles, AliHBTRun *tracks)
{
 cout<<"AliHBTReaderITSv1::Read()"<<endl;
 Int_t Nevents = 0;
 AliITSIOTrack *iotrack=new AliITSIOTrack;
 Int_t currentdir = 0;
 Int_t Ndirs;
 Int_t totalNevents = 0;
 
 if (fDirs)
  {
    Ndirs = fDirs->GetEntries();
  }
 else
  {
    Ndirs = 0;
  }
 
 do //do while is good even if 
  {  
   TFile* gAliceFile = OpenGAliceFile(currentdir);
   if(gAliceFile == 0x0)
    {
       Error("Read","Can not open the file with gAlice");
       delete iotrack;
       return 1;
    }
   if (gAlice->TreeE())//check if tree E exists
     {
      Nevents = (Int_t)gAlice->TreeE()->GetEntries();//if yes get number of events in gAlice
      cout<<"________________________________________________________\n";
      cout<<"Found "<<Nevents<<" event(s) in directory "<<GetDirName(currentdir)<<endl;
      cout<<"Setting Magnetic Field. Factor is "<<gAlice->Field()->Factor()<<endl;
      AliKalmanTrack::SetConvConst(100/0.299792458/0.2/gAlice->Field()->Factor());
     }
    else
     {//if not return an error
       Error("Read","Can not find Header tree (TreeE) in gAlice");
       delete iotrack;
       return 4;
     }

   TFile *file = OpenTrackFile(currentdir);
   if(file == 0x0)
    {
       Error("Read","Can not open the file with ITS tracks V1");
       delete iotrack;
       return 2;
    }
    
   Int_t naccepted = 0;
   char tname[30];
   
   for (Int_t currentEvent = 0; currentEvent < Nevents; currentEvent++)
    { 
      cout<<"Reading Event "<<currentEvent;
      
      sprintf(tname,"TreeT%d",currentEvent);
      file->cd(); 
      TTree *tracktree=(TTree*)file->Get(tname);
      TBranch *tbranch=tracktree->GetBranch("ITStracks");
      tbranch->SetAddress(&iotrack);
      
      gAliceFile->cd();
      gAlice->GetEvent(currentEvent);
      gAlice->GetMCApp()->Particles();

      Int_t nentr=(Int_t)tracktree->GetEntries();
      
      cout<<".  Found "<<nentr<<" tracks.";
      fflush(0);
      
      for (Int_t i=0; i<nentr; i++) 
       {

        tracktree->GetEvent(i);
        if(!iotrack) continue;       
        Int_t label = iotrack->GetLabel();
        if (label < 0) 
         {
           continue;
         }

        TParticle *p = (TParticle*)gAlice->GetMCApp()->Particle(label);
        if(!p)
         {
           Warning("Read","Can not get particle with label &d",label);
           continue;
         }
        if(Pass(p->GetPdgCode())) continue; //check if we are intersted with particles of this type
                                           //if not take next partilce

        AliHBTParticle* part = new AliHBTParticle(*p,i);
        if(Pass(part)) { delete part; continue;}//check if meets all criteria of any of our cuts
                                                //if it does not delete it and take next good track
        
        Double_t px=iotrack->GetPx();
        Double_t py=iotrack->GetPy();
        Double_t pz=iotrack->GetPz();
        Double_t mass = p->GetMass();
        Double_t tEtot = TMath::Sqrt(px*px + py*py + pz*pz + mass*mass);//total energy of the track
 
        Double_t x= iotrack->GetX();
        Double_t y= iotrack->GetY();
        Double_t z= iotrack->GetZ();
        
        AliHBTParticle* track = new AliHBTParticle(p->GetPdgCode(), i, px, py , pz, tEtot, x, y, z, 0.);
        if(Pass(track)) { delete  track;continue;}//check if meets all criteria of any of our cuts
                                                  //if it does not delete it and take next good track

        particles->AddParticle(totalNevents,part);//put track and particle on the run
        tracks->AddParticle(totalNevents,track);
        naccepted++;
       }//end loop over tracks in the event

       totalNevents++;
       cout<<"  Accepted "<<naccepted<<" tracks"<<endl;
     }//end of loop over events in current directory
    
    gAliceFile->Close();
    delete gAliceFile;
    gAliceFile = 0;
    
    file->Close(); 
    delete file;
    file = 0;
    currentdir++;
   }while(currentdir < Ndirs);//end of loop over directories specified in fDirs Obj Array


  delete iotrack;
  fIsRead = kTRUE;
  return 0;
 
 }
/********************************************************************/

TFile* AliHBTReaderITSv1::OpenTrackFile(Int_t ndir)
{
//opens files to be read for given directoru nomber in fDirs Array
   const TString& dirname = GetDirName(ndir); 
   if (dirname == "")
    {
      Error("OpenGAliceFile","Can not get directory name");
      return 0x0;
    }
   TString filename = dirname + "/" + fITSTracksFileName;

   TFile *file = TFile::Open(filename.Data());   
   if (!file)
    {
      Error("Read","Can not open file %s",filename.Data());
      return 0x0;
    }
   if (!file->IsOpen())
    {
      Error("Read","Can not open file %s",filename.Data());
      return 0x0;
    }
   
   return file;
}


/********************************************************************/
TFile* AliHBTReaderITSv1::OpenGAliceFile(Int_t ndir)
{
  const TString& dirname = GetDirName(ndir); 
   if (dirname == "")
    {
      Error("OpenGAliceFile","Can not get directory name");
      return 0x0;
    }
  
  TString filename = dirname + "/" + fGAliceFileName;

  TFile* gAliceFile = TFile::Open(filename.Data());
  if ( gAliceFile== 0x0)
   {
     Error("OpenFiles","Can't open file named %s",filename.Data());
     return 0x0;
   }
  if (!gAliceFile->IsOpen())
   {
     Error("OpenFiles","Can't open file named %s",filename.Data());
     return 0x0;
   }

  if (!(gAlice=(AliRun*)gAliceFile->Get("gAlice")))
   {
     Error("OpenFiles","gAlice have not been found on %s !\n",filename.Data());
     gAliceFile->Close();
     delete gAliceFile;
     return 0x0;
   }
  
  return gAliceFile;
}

/********************************************************************/
/********************************************************************/
Commit	Line	Data
1b446896	1
64e553ff	2	#include "AliHBTReaderITSv1.h"
	3	#include "AliHBTEvent.h"
	4	#include "AliHBTRun.h"
	5	#include "AliHBTParticle.h"
	6	#include "AliHBTParticleCut.h"
1b446896	7
d0c23b58	8	#include <Riostream.h>
64e553ff	9
	10	#include <TROOT.h>
	11	#include <TFile.h>
	12	#include <TTree.h>
	13	#include <TBranch.h>
	14	#include <TObjArray.h>
	15	#include <TParticle.h>
	16	#include <TString.h>
	17	#include <TObjString.h>
	18
	19	#include <AliRun.h>
	20	#include <AliMagF.h>
	21	#include <AliKalmanTrack.h>
	22	#include <AliITSIOTrack.h>
5d12ce38	23	#include "AliMC.h"
1b446896	24
64e553ff	25	ClassImp(AliHBTReaderITSv1)
64e553ff	26	/********************************************************************/
1b446896	27
64e553ff	28	AliHBTReaderITSv1::
	29	AliHBTReaderITSv1(const Char_t* tracksfilename,const Char_t* galicefilename):
	30	fITSTracksFileName(tracksfilename),fGAliceFileName(galicefilename)
1b446896	31	{
	32	fParticles = new AliHBTRun();
	33	fTracks = new AliHBTRun();
	34	fIsRead = kFALSE;
	35	}
64e553ff	36	/********************************************************************/
	37
	38	AliHBTReaderITSv1::
	39	AliHBTReaderITSv1(TObjArray* dirs, const Char_t* tracksfilename,const Char_t* galicefilename):
	40	AliHBTReader(dirs),
	41	fITSTracksFileName(tracksfilename),fGAliceFileName(galicefilename)
	42	{
	43	fParticles = new AliHBTRun();
	44	fTracks = new AliHBTRun();
	45	fIsRead = kFALSE;
	46	}
	47	/********************************************************************/
	48
	49	AliHBTReaderITSv1::~AliHBTReaderITSv1()
1b446896	50	{
	51	delete fParticles;
	52	delete fTracks;
	53	}
64e553ff	54	/********************************************************************/
64e553ff	55
1b446896	56	AliHBTEvent* AliHBTReaderITSv1::GetParticleEvent(Int_t n)
	57	{
	58	//returns Nth event with simulated particles
64e553ff	59	if (!fIsRead)
	60	if(Read(fParticles,fTracks))
	61	{
	62	Error("GetParticleEvent","Error in reading");
	63	return 0x0;
	64	}
	65
1b446896	66	return fParticles->GetEvent(n);
	67	}
	68	/********************************************************************/
64e553ff	69
1b446896	70	AliHBTEvent* AliHBTReaderITSv1::GetTrackEvent(Int_t n)
	71	{
	72	//returns Nth event with reconstructed tracks
64e553ff	73	if (!fIsRead)
	74	if(Read(fParticles,fTracks))
	75	{
	76	Error("GetTrackEvent","Error in reading");
	77	return 0x0;
	78	}
1b446896	79	return fTracks->GetEvent(n);
	80	}
	81	/********************************************************************/
	82
	83	Int_t AliHBTReaderITSv1::GetNumberOfPartEvents()
	84	{
	85	//returns number of events of particles
64e553ff	86	if (!fIsRead)
	87	if(Read(fParticles,fTracks))
	88	{
	89	Error("GetNumberOfPartEvents","Error in reading");
	90	return 0;
	91	}
1b446896	92	return fParticles->GetNumberOfEvents();
	93	}
	94
	95	/********************************************************************/
	96	Int_t AliHBTReaderITSv1::GetNumberOfTrackEvents()
	97	{
	98	//returns number of events of tracks
64e553ff	99	if (!fIsRead)
	100	if(Read(fParticles,fTracks))
	101	{
	102	Error("GetNumberOfTrackEvents","Error in reading");
	103	return 0;
	104	}
1b446896	105	return fTracks->GetNumberOfEvents();
	106	}
	107	/********************************************************************/
	108
	109	Int_t AliHBTReaderITSv1::Read(AliHBTRun* particles, AliHBTRun *tracks)
64e553ff	110	{
429f368c	111	cout<<"AliHBTReaderITSv1::Read()"<<endl;
64e553ff	112	Int_t Nevents = 0;
	113	AliITSIOTrack *iotrack=new AliITSIOTrack;
	114	Int_t currentdir = 0;
	115	Int_t Ndirs;
b0d56759	116	Int_t totalNevents = 0;
b0d56759	117
64e553ff	118	if (fDirs)
	119	{
	120	Ndirs = fDirs->GetEntries();
	121	}
	122	else
	123	{
	124	Ndirs = 0;
	125	}
	126
	127	do //do while is good even if
	128	{
	129	TFile* gAliceFile = OpenGAliceFile(currentdir);
	130	if(gAliceFile == 0x0)
1b446896	131	{
64e553ff	132	Error("Read","Can not open the file with gAlice");
	133	delete iotrack;
	134	return 1;
1b446896	135	}
64e553ff	136	if (gAlice->TreeE())//check if tree E exists
	137	{
	138	Nevents = (Int_t)gAlice->TreeE()->GetEntries();//if yes get number of events in gAlice
	139	cout<<"________________________________________________________\n";
	140	cout<<"Found "<<Nevents<<" event(s) in directory "<<GetDirName(currentdir)<<endl;
	141	cout<<"Setting Magnetic Field. Factor is "<<gAlice->Field()->Factor()<<endl;
	142	AliKalmanTrack::SetConvConst(100/0.299792458/0.2/gAlice->Field()->Factor());
	143	}
	144	else
	145	{//if not return an error
	146	Error("Read","Can not find Header tree (TreeE) in gAlice");
	147	delete iotrack;
	148	return 4;
	149	}
0f14cc3e	150
	151	TFile *file = OpenTrackFile(currentdir);
	152	if(file == 0x0)
	153	{
	154	Error("Read","Can not open the file with ITS tracks V1");
	155	delete iotrack;
	156	return 2;
	157	}
b0d56759	158
b0d56759	159	Int_t naccepted = 0;
64e553ff	160	char tname[30];
b0d56759	161
64e553ff	162	for (Int_t currentEvent = 0; currentEvent < Nevents; currentEvent++)
64e553ff	163	{
b0d56759	164	cout<<"Reading Event "<<currentEvent;
64e553ff	165
	166	sprintf(tname,"TreeT%d",currentEvent);
	167	file->cd();
	168	TTree tracktree=(TTree)file->Get(tname);
	169	TBranch *tbranch=tracktree->GetBranch("ITStracks");
	170	tbranch->SetAddress(&iotrack);
	171
	172	gAliceFile->cd();
	173	gAlice->GetEvent(currentEvent);
5d12ce38	174	gAlice->GetMCApp()->Particles();
1b446896	175
64e553ff	176	Int_t nentr=(Int_t)tracktree->GetEntries();
b0d56759	177
	178	cout<<". Found "<<nentr<<" tracks.";
	179	fflush(0);
	180
64e553ff	181	for (Int_t i=0; i<nentr; i++)
64e553ff	182	{
1b446896	183
64e553ff	184	tracktree->GetEvent(i);
	185	if(!iotrack) continue;
	186	Int_t label = iotrack->GetLabel();
	187	if (label < 0)
	188	{
6440fe71	189	continue;
64e553ff	190	}
0f14cc3e	191
5d12ce38	192	TParticle p = (TParticle)gAlice->GetMCApp()->Particle(label);
64e553ff	193	if(!p)
	194	{
	195	Warning("Read","Can not get particle with label &d",label);
	196	continue;
	197	}
	198	if(Pass(p->GetPdgCode())) continue; //check if we are intersted with particles of this type
	199	//if not take next partilce
1b446896	200
8089a083	201	AliHBTParticle* part = new AliHBTParticle(*p,i);
64e553ff	202	if(Pass(part)) { delete part; continue;}//check if meets all criteria of any of our cuts
	203	//if it does not delete it and take next good track
	204
	205	Double_t px=iotrack->GetPx();
	206	Double_t py=iotrack->GetPy();
	207	Double_t pz=iotrack->GetPz();
	208	Double_t mass = p->GetMass();
	209	Double_t tEtot = TMath::Sqrt(pxpx + pypy + pzpz + massmass);//total energy of the track
	210
	211	Double_t x= iotrack->GetX();
	212	Double_t y= iotrack->GetY();
	213	Double_t z= iotrack->GetZ();
	214
88cb7938	215	AliHBTParticle* track = new AliHBTParticle(p->GetPdgCode(), i, px, py , pz, tEtot, x, y, z, 0.);
64e553ff	216	if(Pass(track)) { delete track;continue;}//check if meets all criteria of any of our cuts
64e553ff	217	//if it does not delete it and take next good track
1b446896	218
64e553ff	219	particles->AddParticle(totalNevents,part);//put track and particle on the run
64e553ff	220	tracks->AddParticle(totalNevents,track);
b0d56759	221	naccepted++;
64e553ff	222	}//end loop over tracks in the event
1b446896	223
64e553ff	224	totalNevents++;
b0d56759	225	cout<<" Accepted "<<naccepted<<" tracks"<<endl;
64e553ff	226	}//end of loop over events in current directory
	227
	228	gAliceFile->Close();
	229	delete gAliceFile;
	230	gAliceFile = 0;
	231
	232	file->Close();
	233	delete file;
	234	file = 0;
429f368c	235	currentdir++;
64e553ff	236	}while(currentdir < Ndirs);//end of loop over directories specified in fDirs Obj Array
1b446896	237
1b446896	238
64e553ff	239	delete iotrack;
	240	fIsRead = kTRUE;
	241	return 0;
	242
1b446896	243	}
64e553ff	244	/********************************************************************/
1b446896	245
64e553ff	246	TFile* AliHBTReaderITSv1::OpenTrackFile(Int_t ndir)
	247	{
	248	//opens files to be read for given directoru nomber in fDirs Array
	249	const TString& dirname = GetDirName(ndir);
	250	if (dirname == "")
	251	{
	252	Error("OpenGAliceFile","Can not get directory name");
	253	return 0x0;
	254	}
	255	TString filename = dirname + "/" + fITSTracksFileName;
f20bcaaa	256
f20bcaaa	257	TFile *file = TFile::Open(filename.Data());
64e553ff	258	if (!file)
	259	{
	260	Error("Read","Can not open file %s",filename.Data());
	261	return 0x0;
	262	}
	263	if (!file->IsOpen())
	264	{
	265	Error("Read","Can not open file %s",filename.Data());
	266	return 0x0;
	267	}
	268
	269	return file;
	270	}
1b446896	271
1b446896	272
64e553ff	273	/********************************************************************/
	274	TFile* AliHBTReaderITSv1::OpenGAliceFile(Int_t ndir)
	275	{
	276	const TString& dirname = GetDirName(ndir);
	277	if (dirname == "")
	278	{
	279	Error("OpenGAliceFile","Can not get directory name");
	280	return 0x0;
	281	}
1b446896	282
64e553ff	283	TString filename = dirname + "/" + fGAliceFileName;
	284
	285	TFile* gAliceFile = TFile::Open(filename.Data());
	286	if ( gAliceFile== 0x0)
1b446896	287	{
64e553ff	288	Error("OpenFiles","Can't open file named %s",filename.Data());
64e553ff	289	return 0x0;
1b446896	290	}
64e553ff	291	if (!gAliceFile->IsOpen())
1b446896	292	{
64e553ff	293	Error("OpenFiles","Can't open file named %s",filename.Data());
64e553ff	294	return 0x0;
1b446896	295	}
1b446896	296
64e553ff	297	if (!(gAlice=(AliRun*)gAliceFile->Get("gAlice")))
	298	{
	299	Error("OpenFiles","gAlice have not been found on %s !\n",filename.Data());
	300	gAliceFile->Close();
	301	delete gAliceFile;
	302	return 0x0;
	303	}
	304
	305	return gAliceFile;
	306	}
	307
	308	/********************************************************************/
	309	/********************************************************************/
	310
	311